package com.itheima.controller;

import com.alibaba.dubbo.config.annotation.Reference;
import com.itheima.constant.MessageConstant;
import com.itheima.entity.Result;
import com.itheima.service.MemberService;
import com.itheima.service.ReportService;
import com.itheima.service.SetmealService;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.*;

@RestController
@RequestMapping("/report")
public class ReportController {

    @Reference
    private MemberService memberService;
    @Reference
    private SetmealService setmealService;
    @Reference
    private ReportService reportService;


    //根据月份查询会员数量
    @RequestMapping("/getMemberReport")
    public Result getMemberReport() {
        Map<String, Object> map = new HashMap<>();
        List<String> months = new ArrayList();
        //获得日历对象
        Calendar calendar = Calendar.getInstance();
        //计算一年的月份
        calendar.add(Calendar.MONDAY, -12);//前12个月
        //遍历获取12个月添加进list集合
        for (int i = 0; i < 12; i++) {
            calendar.add(Calendar.MONTH, 1);
            //获取时间并转换时间格式
            Date date = calendar.getTime();
            months.add(new SimpleDateFormat("yyyy.MM").format(date));
        }
        map.put("months", months);
        //去数据库查找会员数据
        List<Integer> memberCount = memberService.findMemberCountByMonths(months);
        map.put("memberCount", memberCount);
        return new Result(true, MessageConstant.GET_MEMBER_NUMBER_REPORT_SUCCESS, map);
    }

    //饼状图展示会员预约套餐的占比情况
    @RequestMapping("/getSetmealReport")
    public Result getSetmealReport() {
        try {
            Map<String, Object> data = new HashMap<>();
            //存入多个查询
            List<Map<String, Object>> setmealCount = setmealService.findSetmealCount();
            data.put("setmealCount", setmealCount);
            //查询套餐名称
            List<String> setmealNames = new ArrayList<>();
            for (Map<String, Object> map : setmealCount) {
                String name = (String) map.get("name");
                setmealNames.add(name);
            }
            data.put("setmealNames", setmealNames);
            return new Result(true, MessageConstant.GET_SETMEAL_COUNT_REPORT_SUCCESS, data);
        } catch (Exception e) {
            e.printStackTrace();
            return new Result(false, MessageConstant.GET_SETMEAL_COUNT_REPORT_FAIL);
        }
    }

    //运营数据统计
    @RequestMapping("/getBusinessReportData")
    public Result getBusinessReportData() {
        try {
            Map<String, Object> map = reportService.getBusinessReportData();
            return new Result(true, MessageConstant.GET_BUSINESS_REPORT_SUCCESS, map);
        } catch (Exception e) {
            e.printStackTrace();
            return new Result(false, MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }
    }

    //运营数据导出
    @RequestMapping("/exportBusinessReport")
    public Result exportBusinessReport(HttpServletRequest request, HttpServletResponse response) {
        try {
            Map<String, Object> result = reportService.getBusinessReportData();
            //取出返回结果数据,准备将报表数据写入Excel文件
            String reportDate = (String) result.get("reportDate");
            Integer todayNewMember = (Integer) result.get("todayNewMember");
            Integer totalMember = (Integer) result.get("totalMember");
            Integer thisWeekNewMember = (Integer) result.get("thisWeekNewMember");
            Integer thisMonthNewMember = (Integer) result.get("thisMonthNewMember");
            Integer todayOrderNumber = (Integer) result.get("todayOrderNumber");
            Integer thisWeekOrderNumber = (Integer) result.get("thisWeekOrderNumber");
            Integer thisMonthOrderNumber = (Integer) result.get("thisMonthOrderNumber");
            Integer todayVisitsNumber = (Integer) result.get("todayVisitsNumber");
            Integer thisWeekVisitsNumber = (Integer) result.get("thisWeekVisitsNumber");
            Integer thisMonthVisitsNumber = (Integer) result.get("thisMonthVisitsNumber");
            List<Map> hotSetmeal = (List<Map>) result.get("hotSetmeal");

            //路径
            String finePath = request.getSession().getServletContext().getRealPath("template") + File.separator + "report_template.xlsx";
            //创建一个Excel表格对象
            XSSFWorkbook excel = new XSSFWorkbook(new FileInputStream(new File(finePath)));
            //读取第一个工作表
            XSSFSheet sheet = excel.getSheetAt(0);
            //读取行
            XSSFRow row = sheet.getRow(2);
            //日期
            row.getCell(5).setCellValue(reportDate);
            row = sheet.getRow(4);
            //本日新增会员数
            row.getCell(5).setCellValue(todayNewMember);
            //总会员数
            row.getCell(7).setCellValue(totalMember);
            row = sheet.getRow(5);
            row.getCell(5).setCellValue(thisWeekNewMember);//本周新增会员数
            row.getCell(7).setCellValue(thisMonthNewMember);//本月新增会员数

            row = sheet.getRow(7);
            row.getCell(5).setCellValue(todayOrderNumber);//今日预约数
            row.getCell(7).setCellValue(todayVisitsNumber);//今日到诊数

            row = sheet.getRow(8);
            row.getCell(5).setCellValue(thisWeekOrderNumber);//本周预约数
            row.getCell(7).setCellValue(thisWeekVisitsNumber);//本周到诊数

            row = sheet.getRow(9);
            row.getCell(5).setCellValue(thisMonthOrderNumber);//本月预约数
            row.getCell(7).setCellValue(thisMonthVisitsNumber);//本月到诊数

            OutputStream out =response.getOutputStream();
            //文件类型
            response.setContentType("application/vnd.ms=excel");
            //指定以附件文件下载
            response.setHeader("content-Disposition","attachment;filename=report.xlsx");
            excel.write(out);

            out.close();
            excel.close();
            return null;
        } catch (Exception e) {
            e.printStackTrace();
            return new Result(false,MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }
    }
}
